Remove support for the retrieving a host ROTPK from the RSE, as the RSE
no longer has host ROTPKs provisioned by default. Also remove the TC
test which verified this feature.
BREAKING CHANGE: platforms can no longer retrieve the host ROTPK from
the RSE as these are no longer provisioned.
Change-Id: I2c852855e53c36e77f639f17f4c181290d95ccff
Signed-off-by: Jackson Cooper-Driver <jackson.cooper-driver@arm.com>
bd141810f4